I use emacs on linux so am assuming it is the same/similar to windows.

To do what phi suggested, highlight the contents of the table then press ALT+x (M-x means press x while holding the meta key, which is often ALT).

You will notice that the cursor has moved to the small bar at the bottom of the emacs window (the minibuffer) where M-x has also been written. If you now type "align" then press enter, the table will become aligned as required.

emacs has quite a steep learning curve to get the basics, but once you know them it is a very powerful tool. It even has a way of inserting tables into latex (almost) graphically. Google has all you will need, but this link shows you the basics of how to create a basic table.